The king while trying to oppose the revolutionary proceedings of the third estate, closed the hall in order to prevent the session of the national Assembly. The angry members assembled on June 20, 1789,in the hall of an indoor tennis court in the grounds of Versailles.
Here, they took the " Tennis Court Oath " Never to separate.... until the Constitution of the kingdom shall be established. They were led by the leaders like Mirabeau and Abbe sieyes . It is worth mentioning that Mirabeau belonged to a noble family. However, he wanted to do away with a society of feudal privilege. He delivered impressive speeches to the crowds assembled at Versailles.
Similarly, Abbe Sieyes, who was originally a priest brought out a powerful pamphlet called ' what is the third estate '?
At last, the king had to give way and ordered the clergy and nobility to join the third estate. Consequently, the three estates formed a single chamber and thus the formation of the national Assembly was completed.
Undoubtedly, it was the first triumph of the people over the king . It marked the real beginning of the French revolution.